1 /* xscreensaver, Copyright (c) 2002, 2004 Jamie Zawinski <jwz@jwz.org>
3 * Permission to use, copy, modify, distribute, and sell this software and its
4 * documentation for any purpose is hereby granted without fee, provided that
5 * the above copyright notice appear in all copies and that both that
6 * copyright notice and this permission notice appear in supporting
7 * documentation. No representations are made about the suitability of this
8 * software for any purpose. It is provided "as is" without express or
11 * Algorithm by Paul Bourke <pbourke@swin.edu.au>
12 * http://astronomy.swin.edu.au/~pbourke/geometry/sphericalh/
13 * Screensaver veneer and parameter selection by jwz.
17 * These closed objects are commonly called spherical harmonics,
18 * although they are only remotely related to the mathematical
19 * definition found in the solution to certain wave functions, most
20 * notable the eigenfunctions of angular momentum operators.
22 * The formula is quite simple: the form used here is based upon
23 * spherical (polar) coordinates (radius, theta, phi).
25 * r = sin(m0 phi) ^ m1 +
27 * sin(m4 theta) ^ m5 +
30 * Where phi ranges from 0 to pi (lines of latitude), and theta ranges
31 * from 0 to 2 pi (lines of longitude), and r is the radius. The
32 * parameters m0, m1, m2, m3, m4, m5, m6, and m7 are all integers
33 * greater than or equal to 0.
35 * As the degree increases, the objects become increasingly "pointed"
36 * and a large number of polygons are required to represent the surface
41 * The eight parameters live in the `cc->m' array.
42 * Each time we permute the image, we alter *one* of those eight parameters.
43 * Each time we alter a parameter, we move it in the same direction (either
44 * toward larger or smaller values) in the range [0, 3].
46 * By altering only one parameter at a time, and only by small amounts,
47 * we tend to produce successive objects that are pretty similar to each
48 * other, so you can see a progression.
50 * It'd be nice if they were even closer together, so that it looked more
51 * like a morph, but, well, that's not how it works.
53 * There tends to be a dark stripe in the colormaps. I don't know why.
54 * Perhaps utils/colors.c is at fault?
56 * Note that this equation sometimes generates faces that are inside out:
57 * -parameters 01210111
58 * To make this work, we need to render back-faces with two-sided lighting:
59 * figuring out how to correct the winding and normals on those inside out
60 * surfaces would be too hard.
63 #include <X11/Intrinsic.h>
65 extern XtAppContext app;
67 #define PROGCLASS "Spheremonics"
68 #define HACK_INIT init_spheremonics
69 #define HACK_DRAW draw_spheremonics
70 #define HACK_RESHAPE reshape_spheremonics
71 #define HACK_HANDLE_EVENT spheremonics_handle_event
72 #define EVENT_MASK PointerMotionMask
73 #define ccs_opts xlockmore_opts
75 #define DEF_DURATION "100"
76 #define DEF_SPIN "XYZ"
77 #define DEF_WANDER "False"
78 #define DEF_RESOLUTION "64"
79 #define DEF_BBOX "False"
80 #define DEF_GRID "True"
81 #define DEF_SMOOTH "True"
82 #define DEF_PARMS "(default)"
84 #define DEFAULTS "*delay: 30000 \n" \
85 "*showFPS: False \n" \
86 "*wireframe: False \n" \
89 #define countof(x) (sizeof((x))/sizeof((*x)))
91 #include "xlockmore.h"
96 #include "gltrackball.h"
99 #ifdef USE_GL /* whole file */
104 GLXContext *glx_context;
106 trackball_state *trackball;
109 GLuint dlist, dlist2;
123 int polys1, polys2; /* polygon counts */
129 } spheremonics_configuration;
131 static spheremonics_configuration *ccs = NULL;
133 static char *do_spin;
134 static Bool do_wander;
138 static char *static_parms;
142 static XrmOptionDescRec opts[] = {
143 { "-spin", ".spin", XrmoptionSepArg, 0 },
144 { "+spin", ".spin", XrmoptionNoArg, "" },
145 { "-wander", ".wander", XrmoptionNoArg, "True" },
146 { "+wander", ".wander", XrmoptionNoArg, "False" },
147 { "-resolution", ".resolution", XrmoptionSepArg, 0 },
148 { "-duration", ".duration", XrmoptionSepArg, 0 },
149 { "-bbox", ".bbox", XrmoptionNoArg, "True" },
150 { "+bbox", ".bbox", XrmoptionNoArg, "False" },
151 { "-grid", ".grid", XrmoptionNoArg, "True" },
152 { "+grid", ".grid", XrmoptionNoArg, "False" },
153 {"-smooth", ".smooth", XrmoptionNoArg, "True" },
154 {"+smooth", ".smooth", XrmoptionNoArg, "False" },
155 { "-parameters", ".parameters", XrmoptionSepArg, 0 },
158 static argtype vars[] = {
159 {&do_spin, "spin", "Spin", DEF_SPIN, t_String},
160 {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
161 {&res, "resolution", "Resolution", DEF_RESOLUTION, t_Int},
162 {&duration, "duration", "Duration", DEF_DURATION, t_Int},
163 {&do_bbox, "bbox", "BBox", DEF_BBOX, t_Bool},
164 {&do_grid, "grid", "Grid", DEF_GRID, t_Bool},
165 {&smooth_p, "smooth", "Smooth", DEF_SMOOTH, t_Bool},
166 {&static_parms, "parameters", "Parameters", DEF_PARMS, t_String},
169 ModeSpecOpt ccs_opts = {countof(opts), opts, countof(vars), vars, NULL};
172 /* Window management, etc
175 reshape_spheremonics (ModeInfo *mi, int width, int height)
177 GLfloat h = (GLfloat) height / (GLfloat) width;
179 glViewport (0, 0, (GLint) width, (GLint) height);
181 glMatrixMode(GL_PROJECTION);
183 gluPerspective (30.0, 1/h, 1.0, 100.0);
185 glMatrixMode(GL_MODELVIEW);
187 gluLookAt( 0.0, 0.0, 30.0,
191 glClear(GL_COLOR_BUFFER_BIT);
196 gl_init (ModeInfo *mi)
198 /* spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)]; */
199 int wire = MI_IS_WIREFRAME(mi);
201 static GLfloat pos[4] = {5.0, 5.0, 10.0, 1.0};
203 glEnable(GL_NORMALIZE);
207 glLightfv(GL_LIGHT0, GL_POSITION, pos);
208 glEnable(GL_LIGHTING);
210 glEnable(GL_DEPTH_TEST);
212 /* With objects that have proper winding and normals set up on all
213 their faces, one can cull back-faces; however, these equations
214 generate objects that are sometimes "inside out", and determining
215 whether a facet has been inverted like that is really hard.
216 So we render both front and back faces, at a probable performance
217 penalty on non-accelerated systems.
219 When rendering back faces, we also need to do two-sided lighting,
220 or the fact that the normals are flipped gives us too-dark surfaces
221 on the inside-out surfaces.
223 This isn't generally something you'd want, because you end up
224 with half the lighting dynamic range (kind of.) So if you had
225 a sphere with correctly pointing normals, and a single light
226 source, it would be illuminated from two sides. In this case,
227 though, it saves us from a difficult and time consuming
228 inside/outside test. And we don't really care about a precise
231 glDisable(GL_CULL_FACE);
232 glLightModeli (GL_LIGHT_MODEL_TWO_SIDE, TRUE);
238 /* generate the object */
241 sphere_eval (double theta, double phi, int *m)
246 r += pow (sin(m[0] * phi), (double)m[1]);
247 r += pow (cos(m[2] * phi), (double)m[3]);
248 r += pow (sin(m[4] * theta),(double)m[5]);
249 r += pow (cos(m[6] * theta),(double)m[7]);
251 p.x = r * sin(phi) * cos(theta);
253 p.z = r * sin(phi) * sin(theta);
260 do_color (int i, XColor *colors)
263 c[0] = colors[i].red / 65535.0;
264 c[1] = colors[i].green / 65535.0;
265 c[2] = colors[i].blue / 65535.0;
267 glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, c);
268 glColor3f (c[0], c[1], c[2]);
273 draw_circle (ModeInfo *mi, Bool teeth_p)
278 GLfloat step = (M_PI / 180);
280 glBegin(GL_LINE_LOOP);
281 for (th = 0; th < M_PI*2; th += step*5)
286 glVertex3f(x*r1, y*r1, 0);
290 if (!teeth_p) return;
293 for (th = 0; th < M_PI*2; th += step)
296 GLfloat r2 = r1 - 0.01;
299 else if (! (tick % 5))
305 glVertex3f(x*r1, y*r1, 0);
306 glVertex3f(x*r2, y*r2, 0);
313 draw_bounding_box (ModeInfo *mi)
315 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
317 static GLfloat c1[4] = { 0.2, 0.2, 0.6, 1.0 };
318 static GLfloat c2[4] = { 1.0, 0.0, 0.0, 1.0 };
319 int wire = MI_IS_WIREFRAME(mi);
321 GLfloat x1 = cc->bbox[0].x;
322 GLfloat y1 = cc->bbox[0].y;
323 GLfloat z1 = cc->bbox[0].z;
324 GLfloat x2 = cc->bbox[1].x;
325 GLfloat y2 = cc->bbox[1].y;
326 GLfloat z2 = cc->bbox[1].z;
333 if (do_bbox && !wire)
335 glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, c1);
338 glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
340 glVertex3f(x1, y1, z1); glVertex3f(x1, y1, z2);
341 glVertex3f(x2, y1, z2); glVertex3f(x2, y1, z1);
343 glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
344 glNormal3f(0, -1, 0);
345 glVertex3f(x2, y2, z1); glVertex3f(x2, y2, z2);
346 glVertex3f(x1, y2, z2); glVertex3f(x1, y2, z1);
348 glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
350 glVertex3f(x1, y1, z1); glVertex3f(x2, y1, z1);
351 glVertex3f(x2, y2, z1); glVertex3f(x1, y2, z1);
353 glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
354 glNormal3f(0, 0, -1);
355 glVertex3f(x1, y2, z2); glVertex3f(x2, y2, z2);
356 glVertex3f(x2, y1, z2); glVertex3f(x1, y1, z2);
358 glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
360 glVertex3f(x1, y2, z1); glVertex3f(x1, y2, z2);
361 glVertex3f(x1, y1, z2); glVertex3f(x1, y1, z1);
363 glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
364 glNormal3f(-1, 0, 0);
365 glVertex3f(x2, y1, z1); glVertex3f(x2, y1, z2);
366 glVertex3f(x2, y2, z2); glVertex3f(x2, y2, z1);
370 glPushAttrib (GL_LIGHTING);
371 glDisable (GL_LIGHTING);
373 glColor3f (c2[0], c2[1], c2[2]);
379 glVertex3f(0, -0.66, 0);
380 glVertex3f(0, 0.66, 0);
382 draw_circle (mi, True);
383 glRotatef(90, 1, 0, 0);
384 draw_circle (mi, True);
385 glRotatef(90, 0, 1, 0);
386 draw_circle (mi, True);
392 if (x1 > 0) x1 = 0; if (x2 < 0) x2 = 0;
393 if (y1 > 0) y1 = 0; if (y2 < 0) y2 = 0;
394 if (z1 > 0) z1 = 0; if (z2 < 0) z2 = 0;
395 glVertex3f(x1, 0, 0); glVertex3f(x2, 0, 0);
396 glVertex3f(0 , y1, 0); glVertex3f(0, y2, 0);
397 glVertex3f(0, 0, z1); glVertex3f(0, 0, z2);
406 do_tracer (ModeInfo *mi)
408 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
410 if (cc->tracer == -1 &&
412 !(random() % (duration * 4)))
415 cc->tracer = ((random() & 1) ? 0 : 180);
417 cc->mesher = ((random() % ((duration / 3) + 1)) +
418 (random() % ((duration / 3) + 1)));
423 int d = (90 - cc->tracer);
424 GLfloat th = d * (M_PI / 180);
425 GLfloat x = cos (th);
426 GLfloat y = sin (th);
427 GLfloat s = 1.5 / cc->scale;
431 static GLfloat c[4] = { 0.6, 0.5, 1.0, 1.0 };
433 glPushAttrib (GL_LIGHTING);
434 glDisable (GL_LIGHTING);
437 glRotatef (90, 1, 0, 0);
438 glTranslatef (0, 0, y*s/2);
441 glColor3f (c[0], c[1], c[2]);
442 draw_circle (mi, False);
449 if (cc->tracer == 180 || cc->tracer == 360)
456 unit_spheremonics (ModeInfo *mi,
457 int resolution, Bool wire, int *m, XColor *colors)
459 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
469 cc->bbox[0].x = cc->bbox[0].y = cc->bbox[0].z = 0;
470 cc->bbox[1].x = cc->bbox[1].y = cc->bbox[1].z = 0;
472 du = (M_PI+M_PI) / (double)res; /* Theta */
473 dv = M_PI / (double)res; /* Phi */
478 glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
480 for (i = 0; i < res; i++) {
482 for (j = 0; j < res; j++) {
484 q[0] = sphere_eval (u, v, m);
485 n[0] = calc_normal(q[0],
486 sphere_eval (u+du/10, v, m),
487 sphere_eval (u, v+dv/10, m));
488 glNormal3f(n[0].x,n[0].y,n[0].z);
489 if (!wire) do_color (i, colors);
490 glVertex3f(q[0].x,q[0].y,q[0].z);
492 q[1] = sphere_eval (u+du, v, m);
493 n[1] = calc_normal(q[1],
494 sphere_eval (u+du+du/10, v, m),
495 sphere_eval (u+du, v+dv/10, m));
496 glNormal3f(n[1].x,n[1].y,n[1].z);
497 if (!wire) do_color ((i+1)%res, colors);
498 glVertex3f(q[1].x,q[1].y,q[1].z);
500 q[2] = sphere_eval (u+du, v+dv, m);
501 n[2] = calc_normal(q[2],
502 sphere_eval (u+du+du/10, v+dv, m),
503 sphere_eval (u+du, v+dv+dv/10, m));
504 glNormal3f(n[2].x,n[2].y,n[2].z);
505 if (!wire) do_color ((i+1)%res, colors);
506 glVertex3f(q[2].x,q[2].y,q[2].z);
508 q[3] = sphere_eval (u,v+dv, m);
509 n[3] = calc_normal(q[3],
510 sphere_eval (u+du/10, v+dv, m),
511 sphere_eval (u, v+dv+dv/10, m));
512 glNormal3f(n[3].x,n[3].y,n[3].z);
513 if (!wire) do_color (i, colors);
514 glVertex3f(q[3].x,q[3].y,q[3].z);
518 # define CHECK_BBOX(N) \
519 if (q[(N)].x < cc->bbox[0].x) cc->bbox[0].x = q[(N)].x; \
520 if (q[(N)].y < cc->bbox[0].y) cc->bbox[0].y = q[(N)].y; \
521 if (q[(N)].z < cc->bbox[0].z) cc->bbox[0].z = q[(N)].z; \
522 if (q[(N)].x > cc->bbox[1].x) cc->bbox[1].x = q[(N)].x; \
523 if (q[(N)].y > cc->bbox[1].y) cc->bbox[1].y = q[(N)].y; \
524 if (q[(N)].z > cc->bbox[1].z) cc->bbox[1].z = q[(N)].z
536 GLfloat w = cc->bbox[1].x - cc->bbox[0].x;
537 GLfloat h = cc->bbox[1].y - cc->bbox[0].y;
538 GLfloat d = cc->bbox[1].z - cc->bbox[0].z;
539 GLfloat wh = (w > h ? w : h);
540 GLfloat hd = (h > d ? h : d);
541 GLfloat scale = (wh > hd ? wh : hd);
545 if (wire < 2 && (do_bbox || do_grid))
547 GLfloat s = scale * 1.5;
550 draw_bounding_box (mi);
559 init_colors (ModeInfo *mi)
561 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
563 cc->ncolors = cc->resolution;
564 cc->colors = (XColor *) calloc(cc->ncolors, sizeof(XColor));
565 make_smooth_colormap (0, 0, 0,
566 cc->colors, &cc->ncolors,
569 /* brighter colors, please... */
570 for (i = 0; i < cc->ncolors; i++)
572 cc->colors[i].red = (cc->colors[i].red / 2) + 32767;
573 cc->colors[i].green = (cc->colors[i].green / 2) + 32767;
574 cc->colors[i].blue = (cc->colors[i].blue / 2) + 32767;
579 /* Pick one of the parameters to the function and tweak it up or down.
582 tweak_parameters (ModeInfo *mi)
584 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
586 /* If the -parameters command line option was specified, just use that
591 !!strcasecmp (static_parms, "(default)"))
595 if (8 == sscanf (static_parms, "%d %d %d %d %d %d %d %d %c",
596 &cc->m[0], &cc->m[1], &cc->m[2], &cc->m[3],
597 &cc->m[4], &cc->m[5], &cc->m[6], &cc->m[7],
600 else if (strlen (static_parms) == 8 &&
601 1 == sscanf (static_parms, "%lu %c", &n, &dummy))
603 const char *s = static_parms;
606 cc->m[i++] = (*s++)-'0';
610 "%s: -parameters must be a string of 8 ints (not \"%s\")\n",
611 progname, static_parms);
618 # define SHIFT(N) do { \
620 cc->m[n] += cc->dm[n]; \
622 cc->m[n] = 0, cc->dm[n] = -cc->dm[n]; \
623 else if (cc->m[n] >= cc->m_max) \
624 cc->m[n] = cc->m_max, cc->dm[n] = -cc->dm[n]; \
627 /* else if (cc->m[n] >= cc->m_max/2 && (! (random() % 3))) \
628 cc->m[n] = cc->m_max/2, cc->dm[n] = -cc->dm[n]; \
633 case 0: SHIFT(0); break;
634 case 1: SHIFT(1); break;
635 case 2: SHIFT(2); break;
636 case 3: SHIFT(3); break;
637 case 4: SHIFT(4); break;
638 case 5: SHIFT(5); break;
639 case 6: SHIFT(6); break;
640 case 7: SHIFT(7); break;
641 default: abort(); break;
646 printf ("%s: state: %d %d %d %d %d %d %d %d\n",
648 cc->m[0], cc->m[1], cc->m[2], cc->m[3],
649 cc->m[4], cc->m[5], cc->m[6], cc->m[7]);
656 generate_spheremonics (ModeInfo *mi)
658 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
659 int wire = MI_IS_WIREFRAME(mi);
661 tweak_parameters (mi);
664 static Bool done = False;
665 if (!done || (0 == (random() % 20)))
673 glNewList(cc->dlist, GL_COMPILE);
674 cc->polys1 = unit_spheremonics (mi, cc->resolution, wire,cc->m,cc->colors);
677 glNewList(cc->dlist2, GL_COMPILE);
678 glPushAttrib (GL_LIGHTING);
679 glDisable (GL_LIGHTING);
681 glScalef (1.05, 1.05, 1.05);
682 cc->polys2 = unit_spheremonics (mi, cc->resolution, 2, cc->m, cc->colors);
693 init_spheremonics (ModeInfo *mi)
695 spheremonics_configuration *cc;
698 ccs = (spheremonics_configuration *)
699 calloc (MI_NUM_SCREENS(mi), sizeof (spheremonics_configuration));
701 fprintf(stderr, "%s: out of memory\n", progname);
705 cc = &ccs[MI_SCREEN(mi)];
708 cc = &ccs[MI_SCREEN(mi)];
710 if ((cc->glx_context = init_GL(mi)) != NULL) {
712 reshape_spheremonics (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
717 glEnable (GL_LINE_SMOOTH);
718 glHint (GL_LINE_SMOOTH_HINT, GL_NICEST);
719 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
724 Bool spinx=False, spiny=False, spinz=False;
725 double spin_speed = 1.0;
726 double wander_speed = 0.03;
731 if (*s == 'x' || *s == 'X') spinx = True;
732 else if (*s == 'y' || *s == 'Y') spiny = True;
733 else if (*s == 'z' || *s == 'Z') spinz = True;
737 "%s: spin must contain only the characters X, Y, or Z (not \"%s\")\n",
744 cc->rot = make_rotator (spinx ? spin_speed : 0,
745 spinz ? spin_speed : 0,
746 spiny ? spin_speed : 0,
748 do_wander ? wander_speed : 0,
749 (spinx && spiny && spinz));
750 cc->trackball = gltrackball_init ();
756 cc->resolution = res;
758 load_font (mi->dpy, "labelfont", &cc->font, &cc->font_list);
760 cc->dlist = glGenLists(1);
761 cc->dlist2 = glGenLists(1);
763 cc->m_max = 4; /* 9? */
766 for (i = 0; i < countof(cc->dm); i++)
767 cc->dm[i] = 1; /* going up! */
769 /* Generate a few more times so we don't always start off with a sphere */
770 for (i = 0; i < 5; i++)
771 tweak_parameters (mi);
774 generate_spheremonics(mi);
779 spheremonics_handle_event (ModeInfo *mi, XEvent *event)
781 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
783 if (event->xany.type == ButtonPress &&
784 event->xbutton.button == Button1)
786 cc->button_down_p = True;
787 gltrackball_start (cc->trackball,
788 event->xbutton.x, event->xbutton.y,
789 MI_WIDTH (mi), MI_HEIGHT (mi));
792 else if (event->xany.type == ButtonRelease &&
793 event->xbutton.button == Button1)
795 cc->button_down_p = False;
798 else if (event->xany.type == ButtonPress &&
799 (event->xbutton.button == Button4 ||
800 event->xbutton.button == Button5))
802 gltrackball_mousewheel (cc->trackball, event->xbutton.button, 10,
803 !!event->xbutton.state);
806 else if (event->xany.type == KeyPress)
810 XLookupString (&event->xkey, &c, 1, &keysym, 0);
812 if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
814 cc->change_tick = duration;
818 else if (event->xany.type == MotionNotify &&
821 gltrackball_track (cc->trackball,
822 event->xmotion.x, event->xmotion.y,
823 MI_WIDTH (mi), MI_HEIGHT (mi));
832 draw_spheremonics (ModeInfo *mi)
834 spheremonics_configuration *cc = &ccs[MI_SCREEN(mi)];
835 Display *dpy = MI_DISPLAY(mi);
836 Window window = MI_WINDOW(mi);
838 if (!cc->glx_context)
841 glShadeModel(GL_SMOOTH);
843 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
847 glScalef(1.1, 1.1, 1.1);
851 get_position (cc->rot, &x, &y, &z, !cc->button_down_p);
852 glTranslatef((x - 0.5) * 8,
856 gltrackball_rotate (cc->trackball);
858 get_rotation (cc->rot, &x, &y, &z, !cc->button_down_p);
859 glRotatef (x * 360, 1.0, 0.0, 0.0);
860 glRotatef (y * 360, 0.0, 1.0, 0.0);
861 glRotatef (z * 360, 0.0, 0.0, 1.0);
866 mi->polygon_count = 0;
868 glScalef (cc->scale, cc->scale, cc->scale);
869 glCallList (cc->dlist);
870 mi->polygon_count += cc->polys1;
872 if (cc->mesher >= 0 /* || mouse_p */)
874 glCallList (cc->dlist2);
875 mi->polygon_count += cc->polys2;
882 if (cc->button_down_p)
886 ((cc->m[0]<10 && cc->m[1]<10 && cc->m[2]<10 && cc->m[3]<10 &&
887 cc->m[4]<10 && cc->m[5]<10 && cc->m[6]<10 && cc->m[7]<10)
889 : "%d %d %d %d %d %d %d %d"),
890 cc->m[0], cc->m[1], cc->m[2], cc->m[3],
891 cc->m[4], cc->m[5], cc->m[6], cc->m[7]);
893 glColor3f(1.0, 1.0, 0.0);
894 print_gl_string (mi->dpy, cc->font, cc->font_list,
895 mi->xgwa.width, mi->xgwa.height,
896 10, mi->xgwa.height - 10,
902 if (cc->change_tick++ >= duration && !cc->button_down_p)
904 generate_spheremonics(mi);
906 cc->mesher = -1; /* turn off the mesh when switching objects */
912 if (mi->fps_p) do_fps (mi);
915 glXSwapBuffers(dpy, window);